pinChatMessage method
Use this method to add a message to the list of pinned messages in a chat.
If the chat is not a private chat, the bot must be an administrator in the chat for this to work and must have the 'can_pin_messages' admin right in a supergroup or 'can_edit_messages' admin right in a channel.
Returns True on success.
Implementation
Future<bool> pinChatMessage(
ChatID chatId,
int messageId, {
bool? disableNotification,
}) {
return _client.apiCall(_token, 'pinChatMessage', {
'chat_id': chatId,
'message_id': messageId,
'disable_notification': disableNotification,
});
}